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GeographyMediumAsked in: CDS · CDS-I 2017, GK

Tropical evergreen rain forest biome provides optimum environmental conditions for the growth of plants and animals. Which one among the following statements regarding this is not correct?

  1. A.It has heavy rainfall and high temperature throughout the year.
  2. B.This biome is also called mega-thermal biome.
  3. C.The evergreen rain forest biome extends between 10° N and 10° S latitudes.
  4. D.The maximum development of this biome has taken place in central and southern California, and north-western coastal lands of Africa.

Correct answer

D. The maximum development of this biome has taken place in central and southern California, and north-western coastal lands of Africa.

Explanation

The correct answer is D, the statement placing the biome's greatest development in central and southern California and north-western coastal Africa. Those areas have a Mediterranean climate with dry summers and winter rain, and their vegetation is evergreen scrub such as chaparral and maquis, not rain forest. The tropical evergreen rain forest reaches its maximum development in the Amazon basin of South America, the Congo basin of Africa and the islands of South-east Asia such as Indonesia and Malaysia. In India, smaller patches occur in the Western Ghats, the North-East and the Andaman and Nicobar Islands. These forests have a dense, multi-layered canopy and are the richest land biome in species. Option A is correct about the biome because rainfall is heavy and temperatures stay high all year. Option B is correct because the constant heat earns it the name mega-thermal biome. Option C is correct because it lies roughly between 10° N and 10° S of the equator. Exam tip: rain forest = Amazon, Congo, South-east Asia; California and north-west Africa = Mediterranean.

Practice Questions

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Q2.GeographyAsked in: CDS · CDS-II 2017, GKMedium

Which of the following statements is/are correct? 1. Himalayan rivers have their origin in the snow-covered areas, hence are dry in winter season. 2. Rivers of the Peninsular Plateau have reached maturity. 3. Himalayan rivers depict all the three stages of normal cycle of erosion. Select the correct answer using the code given below.

  1. A.2 only
  2. B.1 and 3 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: C. 2 and 3 only

Himalayan rivers are perennial, so statement 1 is wrong, while statements 2 and 3 are correct. Himalayan rivers such as the Ganga, Indus and Brahmaputra rise from glaciers and snowfields and also get monsoon rain, so they flow all year round, including in winter.

Q3.GeographyAsked in: CDS · CDS-II 2017, GKMedium

Which of the following statements related to latitude are true? 1. Rainfall, temperature and vegetation vary with latitude. 2. The difference between the longest day and the shortest day increases with latitude. 3. Indira Point is located approximately at 6°45' N latitude. Select the correct answer using the code given below.

  1. A.1 and 2 only
  2. B.1 and 3 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

All three statements about latitude are true. Latitude decides how directly the Sun's rays strike a place, so temperature, rainfall and the type of vegetation change from the equator towards the poles, from hot, wet rainforests to cold tundra.

Q4.GeographyAsked in: CDS · CDS-II 2017, GKMedium

Which of the following lakes is/are situated in Ladakh? 1. Tso Kar 2. Pangong Tso 3. Tsomgo 4. Tso Moriri Select the correct answer using the code given below.

  1. A.1 only
  2. B.2 and 3
  3. C.1, 2 and 4
  4. D.2 and 4 only
Show answer
Correct answer: C. 1, 2 and 4

Tso Kar, Pangong Tso and Tso Moriri are high-altitude lakes of Ladakh, while Tsomgo lies in Sikkim. Pangong Tso, at about 4,350 metres, is a long, narrow lake that stretches from Ladakh into Tibet, and most of its length lies on the Chinese side.